单选题Listentopartofalectureinaphilosophyclass.Nowgetreadytoanswerthequestions.Youmayuseyournotestohelpyouanswer,Listenagaintopartofthelecture.Thenanswerthequestion.

单选题Which of the following can be inferred about the findings described in paragraph 2 ?

单选题Many of species of milkweed are among the most dangerous of poisonous plants, while A B C others have little, if any, toxicity. D

单选题Civil Engineering: Suspension Bridge Professor: Good morning, class. Today I ______ a picture of ______ bridge called a suspension bridge. Student: That bridge ______ me. Is it the Clifton Suspension Bridge in Bristol, England? Professor: Yes, you"re right. ______ today. Can anyone tell me who built it and what is ______ the suspension bridge? Student: Well, the Clifton Suspension Bridge was designed in 1830 by a man named Brunel, but he died before the bridge was finished. ______, the bridge was finally completed in 1864. Professor: Excellent. You"re really with it today. Now who can tell me about suspension bridges? Or is this question ______? Student: I think I can answer that. According to some books I"ve read about suspension bridges, ______ from cables that are strung across a river like the Avon Gorge in the picture. What makes a suspension bridge unique is that ______ and the road deck hangs below the supports ______ them like other bridges. Professor: Excellent. Let me ______. Some of the oldest suspension bridges used ropes instead of cables ______. This only allowed for people to hang ______. Soon after, ______ between the ropes. Unfortunately, these bridges were not convenient or safe for taking donkeys or carts across because of the swinging of the ropes and the loads were just too heavy for the bridge to bear. The suspension bridges that we use today, like the one in the picture, were first developed ______ in the early 1800"s. Civil Engineers such as Telford and Brunel thought of the idea of using towers to lift up the cables and using a frame to ______ the bridge called a truss. The towers allowed the bridge to ______, which would give horses and carriages a means to cross. In a nutshell, Brunel designed the first non-moving bridge. Today, the design of the suspension bridge is the same, but we use steel cables ______ found on a bicycle chain. In fact, Brunel"s famous bridge still has the ______. Student: How do suspension bridges hold the heavy weight of cars and trucks? In the past, they only used horses and carriages so the bridges didn"t carry as much weight as they do now. Professor: Good point. All modem bridges that you see today use ______ to hold the roadway. These cables are hung over two towers and held by concrete blocks ______. Vehicles such as cars and trucks ______ and because the roadway is held up by hangers from the steel cables, they can ______ the two towers. This means that the two towers are always compressed, which allows them to ______ or concrete blocks ______ the tension from the steel cables. Steel is the preferred material used in long suspension bridges because it can handle extremely heavy weight. Steel is stronger than iron and is also ______. A famous example can be seen in the Brooklyn Bridge in New York, USA. Student: Are there any problems with a suspension bridge? Professor: I"m glad you asked me that question. There have been ______ suspension bridges. If the engineers design a bridge that is ______, the bridges will not be strong enough. They will begin to move and ______, even in light winds and will eventually ______ or river below.

单选题The word "converted" in line 14 is closest in meaning to

单选题Considered one of the most beautiful of the fine art, ballet is a combination of dance and mime performed to music.

单选题According to the passage, 30 percent of the Sun's incoming energy

单选题According to the passage, the highest amount of pheromone vapor is found

单选题Listening4"AdmissionsOffice"

单选题The planets far from the Sun are (so remote from) any heat (source) that their temperatures are (thought) to be (much near) absolute zero.

单选题In the United States during the Second World War, (each) trade unions (and. employers avoided federal limits on wages (by) offering (employees) nontaxable medical benefits. A. each B. and C. by D. employees

单选题Altitude, climate, temperature, and the length of the growing season both determine Where plants will grow.

单选题From colonial times, United States property owners agreed to tax themselves on the theory ...... directly from services that the government could provide. (a)property owners benefited so that (b)why property owners benefited (c)that if property owners benefited (d)that property owners benefited

单选题The word "accumulated" in line 8 is closest in meaning to

单选题It can be inferred from the passage that terra-cotta had which of the following advantages"

单选题Cheese may be hard or soft, depending on the amount of water left into it and the character A B C D of the cuting.

单选题According to the passage, in what way did the Sumerian language resemble ancient Greek and Latin?

单选题23. Photography disseminates information (about humanity) and nature, records the (visible) world, and (extension) human knowledge into (areas the) eye cannot penetrate.

单选题Butterflies and moths undergo complete metamorphosis, them changing from caterpillar to adult via one intermediate stage, the pupa.